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How to Install Oracle Java JRE on Ubuntu Linux

This tutorial will cover the installation of 32-bit and 64-bit Oracle Java 7 (currently version number 1.8.0_5) JRE on 32-bit and 64-bit Ubuntu operating systems. These instructions will also work on Debian and Linux Mint. This article is intended for those who only want to install Oracle Java JRE on their Debian based Linux systems, such as Debian, Ubuntu and Linux Mint. Using this method you will only be able to run and execute Java programs and not be able to develop and program in Java. This article was created due to so many requests from other users who wanted to know how to only install Oracle Java JRE on their Ubuntu systems. I included a section on how to enable Oracle Java JRE in your web browsers as well using this method. These instructions will work on Debian, Ubuntu and Linux Mint.

Steps

1

Check to see if your Ubuntu Linux operating system architecture is 32-bit or 64-bit, open up a terminal and run the following command below.

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Type/Copy/Paste: file /sbin/init

Note the bit version of your Ubuntu Linux operating system architecture it will display whether it is 32-bit or 64-bit.

2

Check if you have Java installed on your system. To do this, you will have to run the Java version command from terminal.

If you have OpenJDK installed on your system, you have the wrong vendor version of Java installed for this exercise.

3

Completely remove the OpenJDK/JRE from your system and create a directory to hold your Oracle Java JRE binaries. This will prevent system conflicts and confusion between different vendor versions of Java. For example, if you have the OpenJDK/JRE installed on your system, you can remove it by typing the following at the command line:

Type/Copy/Paste: sudo apt-get purge openjdk-*

This command will completely remove OpenJDK/JRE from your system

Type/Copy/Paste: sudo mkdir -p /usr/local/java

This command will create a directory to hold your Oracle Java JDK and JRE binaries.

Important Information: 64-bit Oracle Java binaries do not work on 32-bit Ubuntu Linux operating systems, you will receive multiple system error messages, if you attempt to install 64-bit Oracle Java on 32-bit Ubuntu Linux.

5

Copy the Oracle Java binaries into the /usr/local/java directory. In most cases, the Oracle Java binaries are downloaded to: /home/“your_user_name”/Downloads.

32-bit Oracle Java on 32-bit Ubuntu Linux installation instructions:

Type/Copy/Paste: cd /home/“your_user_name”/Downloads

Type/Copy/Paste: sudo cp -r jre-8u5-linux-i586.tar.gz /usr/local/java

Type/Copy/Paste: cd /usr/local/java

64-bit Oracle Java on 64-bit Ubuntu Linux installation instructions:

Type/Copy/Paste: cd /home/“your_user_name”/Downloads

Type/Copy/Paste: sudo cp -r jre-8u5-linux-x64.tar.gz /usr/local/java

Type/Copy/Paste: cd /usr/local/java

6

Run the following commands on the downloaded Oracle Java tar.gz files. Make sure to do this as root in order to make them executable for all users on your system. To open a root terminal type sudo -s you will be prompted for your logon password.

32-bit Oracle Java on 32-bit Ubuntu Linux installation instructions:

Type/Copy/Paste: sudo chmod a+x jre-8u5-linux-i586.tar.gz

64-bit Oracle Java on 64-bit Ubuntu Linux installation instructions:

Type/Copy/Paste: sudo chmod a+x jre-8u5-linux-x64.tar.gz

7

Unpack the compressed Java binaries, in the directory /usr/local/java

32-bit Oracle Java on 32-bit Ubuntu Linux installation instructions:

Type/Copy/Paste: sudo tar xvzf jre-8u5-linux-i586.tar.gz

64-bit Oracle Java on 64-bit Ubuntu Linux installation instructions:

Type/Copy/Paste: sudo tar xvzf jre-8u5-linux-x64.tar.gz

8

Double-check your directories. At this point, you should have an uncompressed binary directory in /usr/local/java for the Java JDK/JRE listed as:

Type/Copy/Paste: ls -a

jre1.8.0_05

9

Edit the system PATH file /etc/profile and add the following system variables to your system path. Use nano, gedit or any other text editor, as root, open up /etc/profile.

Type/Copy/Paste: sudo gedit /etc/profile

or

Type/Copy/Paste: sudo nano /etc/profile

10

Scroll down to the end of the file using your arrow keys and add the following lines below to the end of your /etc/profile file: